Oven attachment for stoves



H. C. HANSEN.

OVEN- ATTACHMENT FOR STOVES. APPLICATION FTLED 1AN.18.1918.

1,327,203, A Patented .'ru1.6,1920.y

INVENTOR HMS Cf//Mfsf/f BY Hymn MRNEY:

'HANS C. HANSEN, OF SEATTLE, WASHINGTON.

OVEN ATTACHMENT FOR STOVES.

Speeicaton of Letters Patent.

lPatented Jan. 6, 1920.

Application filed January 18, 1918. Serial No. 212,521.

To all whom t may concern.'

Be it known that I, HANS C. HANSEN, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a new and useful Improvement in Oven Attachments for Stoves, of which the following` is a specification.

This invention relates to improvements in attachments for cooking stoves, heaters, ranges and the like, and more particularly to the construction and method of heating the ovens of such stoves; and the object of this invention is to locate the position of the baking ovens in such relation to the fire box as to receive the full distribution of the upward rise of the heated air circulation over the sides of the ovens and thus eliminate the downward draft.

A further object resides in the manner of producing` a more equal distribution of heat over all sides of the oven surfaces.

A still further object resides in conservas tion of fuel due to an unimpaired draft, which precludes the temperature of the ovens from cooling ofi'. To maintain the ovens at approximately normal baking temperature the heat must circulate freely there over. In stoves. where the ovens are to the side or below the fire box, the heated air must be drawn downwardly in order to pass around the sides of the ovens. rIhis condition requires a good size fire to create sufficient draft to force the heat below. The physical law of heat is to rise. It can be readily seen that unless a good size iire is maintained in the fire box there cannot be suflicient draft created to force the heat downwardly, and consequently without draft there is not the oxygen drawn into the lire box to support combustion, the heat value of the fuel is lost in smoke, which escapes up the chimney, and the fire-soon bccomes extinguished unless revived.

Further advantages will appear from the following specification, illustrated in the accompanying drawings, and nally pointed out in the appended claims.

In the drawings, Figure 1 is a front elevation of an ordinary stove, showing the ovens as applied thereto; Fig. 2 is a plan view of the ovens illustrating the direction of air circulation thereunder; Fig. 3 is a sectional view taken along line 3-3 of Fig. 2; and Fig.

l is a side elevation of an oven that can be attached to an ordinary range or heater.

Referring more particularly to the drawings, in which like numerals indicate like parts, the numeral 1 represents an ordinary range and 2 indicates the main pipe that leads to the pipe exit 20. 3 are the improved baking ovens which are located in substantially the same position on a range as the usual warming ovens thereof, and 3 are the doors that are hingedly secured in any well known manner.

I have herein shown the ovens in pairs instead of singly with a partition wall 4l therebetween. 5, 6 and 7 indicate the bottom, sides and upper passageways respectively for the heated air circulation between the ovens and the outer casing 8.

For the purpose of insuring a more equal distribution of heat over the entire area of the oven surfaces, I have employed a plurality of deilectors 9, as shown in Fig. 3, radiating from the main pipe 2 tothe sides of the ovens. VrFliese deflectors are preferably semi-circular with an exposed upper side which is adapted to come flush with the bottom plate of the ovens. This construction causes the heat circulation to be concentrated in units and is drawn through these apertures along the exposed bottom surface of the oven and passes out into the channel 6 and thence upwardly along the sides of the ovens and over the top thereof.

11 is a horizontal deflector plate that is provided between the ovens and the outer casing 8 and terminates short of the outer casing to the rear thereof to form an outlet 13. This plate deflects the heat along the sides of the ovens and the outlet 13 permits the heat circulation to rise upwardly into the passageway 7 and thereby heat the top of the ovens in its nal course to the exit pipe 20. It is to be observed that the passage of heated air circulation is only deected horizontally and is never caused to be directed downwardly, hence the draft is not impaired.

14 indicates a door provided on the'bottom side of the ovens, whereby the deflectors 9 as a unit can be withdrawn and the soot removed therefrom, and 15 and 16 are similar doors to permit the removal of soot from the deiector plate 11 and from the passageway Z respectively.

This oven improvement can be easily attached to any range or heating stove, or formed integral therewith. A damper 17 provided on the exit pipe 20 provides a shutoil" or direct draft up the chimney for starting the lire burning at the beginning. A damper can likewise be provided on the range l to shut oil the circulation from the original ovens and utilize the heat radiation for warming purposes only, if desired.

It is obvious thatv various mechanical changes can be inade in the inanner of construction within the scope of the appended claims.

What I claini is new, and tect by Letters Patent, is:

1. In combination with a stove and stove pipe, an oven provided above the lire box of said stove, a casing spaced apart from said oven providing a passageway for the circulation of heated air around all sides of said oven, a series of deflectors provided beneath said ovens in said passageway connecting radially with said pipe, and deflectors on the sides of said oven in said desire to proassalrewa for diffusino' the heat circulation horizontally over the sides of said oven.

2. A range comprising an oven provided above the l'ire boX thereof, an outer casing spaced apart' from said oven providing a passageway for the circulation of heated air around all sides of said oven, a stove pipe leading from said fire box upwardly and connecting with said passageway,.a series of deectors provided in the bottom of said passageway and adapted to engage said pipe and forni aA plurality of circulation chambers beneath the bottoni surface of said oven for diffusing heat thereunder.

3. A range comprising an oven provided above the lire boX thereof, an outer casing spaced apart from saidV oven providing al passageway for the circulation of heated air around all sides of said oven, ay stove pipe leading from said lire box upwardly and connecting with said passageway, a series of deflectors provided in the bottom of said passageway and adapted to engage said pipe and form a plurality of circulating chambers beneath the bottom surface of said oven, and a horizontal deiector provided in said passageway on the side of said oven for diffusing heat flowing from said chambers.

4. An oven attachment in combination with a stove and the stove pipe7 an outer casing spaced apart from said oven providing a passageway for the circulation of heated air around all sides of said oven, deiiectors adapted to articulate with said pipe within the bottom of said passageway, a deiectcr on the sides of said passageway for diffusing the circulation of heat horizontally and means for disengaging said deiectors for removing the accumulation of soot.

Signed by nie at Seattle, lVashington, this 30 day of December, 1917.

v HANS C. HANSEN. Witnesses ERNEST D. KIDIERLEE, RICHARD J. C0011. 

